Price mechanism is a basic means of resource allocation by the market，and the insurance rate regulation mechanism reform is a core part of the liberalization reform in the insurance industry. This report reviews and summarizes the development history of insurance rate regulation mechanism of four important insurance types-life insurance，accidental injury insurance，commercial auto insurance and compulsory auto liability insurance. Furthermore，this report discusses，in the current period，the liberalization reform of insurance rate regulation mechanism for the four insurance types，focusing on its effects and main considerations.